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Two overlapping, graduated wear bands extend the life of a print ribbon. Premature print ribbon replacement due to a narrow wear band is thus avoided.
English (United States)
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Two overlapping, graduated wear bands extend the life of a print ribbon.
Premature print ribbon replacement due to a narrow wear band is thus avoided.
Two wide, graduated, overlapping wear bands Nos. 1 and 2 (Fig.
1a) are formed by positioning print ribbon 3 so that the extreme
left-hand character is located below the ribbon center line (Fig.
1b). Print ribbon 3 is angled downwardly (Fig. 1c) so that the
extreme right-hand character is just above the print ribbon center
line. Each wear band, such as wear band No. 1 (Fig. 1d), is
established due to a greater number of characters being printed
during normal printing in the left portion in contrast with the
number of characters printed in the right portion. That is, a
relatively higher print density occurs in the left portion in
comparison with the print density occurring in the right portion.
To obtain wear band No. 2 (Fig. 1e), ribbon 3 is rotated 180
degrees in the plane of the paper, as indicated by arrows 4 and 5.
That is, end A replaces end B, and vice versa.
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